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2-6 SERVICE DATA
Service Specifications
Service Limit (mm)
FE120 FE170 FE250Item
Type D Type G Type D Type G Type D Type G
Piston Ring
Piston Ring Thickness (minimum)
Top, Second 1.42 (0.056 in) 1.44 (0.057 in)
Piston Ring End Gap (maximum)
Top, Second 1.0 (0.039 in)
Oil Ring Visual Inspection
Cylinder Head
Valve Seating Surface Width
Standard 0.7 (0.028 in) 0.8 (0.031 in)
Maximum 1.7 (0.067 in) 1.9 (0.075 in)
Valve Guide Bore (maximum)
Intake, Exhaust 5.562 (0.2190 in) 6.065 (0.2388 in)
Rocker Arm Bearing Bore (maximum) ––– ––– –––
Gasket Surface Warp (maximum) 0.05 (0.002 in)
Rocker Arm Shaft Diameter (minimum) ––– ––– –––
Valve
Valve Stem Diameter
Intake Valve (minimum) 5.430 (0.2138 in) 5.930 (0.2335 in)
Exhaust Valve (minimum) 5.415 (0.2132 in) 5.915 (0.2329 in)
Valve Stem Runout (maximum)
Intake, Exhaust 0.05 (0.002 in) 0.03 (0.001 in)
Valve Head Thickness (minimum)
Intak, Exhaust 0.5 (0.020 in) 0.6 (0.024 in)
Valve Spring Free Length (minimum)
Intake, Exhaust 31.8 (1.252 in) 32.8 (1.291 in)
Rocker Arm Pushrod Runout (maximum)
Intak, Exhaust 0.5 (0.020 in) 0.3 (0.012 in)
HLA Device Leak-Dwon Dimension (maximum)
Intake, Exhaust ––– ––– –––
Valve Lift Height by ACR (minimum)
Exhaust 0.6 (0.024 in)
Oil Pump
Inner Rotor Shaft Diameter (minimum) ––– ––– –––
Outer Rotor
Diameter (minimum) ––– ––– –––
Width (minimum) ––– ––– –––
Inner/Outer Rotor Clearance (maximum) ––– ––– –––
Relief Valve Spring Free Length (minimum) ––– ––– –––
Breather Valve Air Gap (maximum)
0.2 (0.008 in)
Starter Motor
Carbon Brush Length (minimum) *
Commutator Diameter (minimum) *
Commutator Groove Depth (minimum) 0.2 (0.008 in)
*: Refer to Electric Starter System